Slow upstream since 200 to 350 VOLT upgrade

[pjayuk]

Since my upgrade from 200 to 350 as part of the VOLT benefits my upstream speed has intermittently dropped from 36 mbps to around 5 mbps with QAM dropping to 16 on three or four channels. Downstream is rock solid. Prior to the ‘upgrade’ both upstream and downstream were rock solid.

Upstream went off a cliff at about 0940 this morning:

[Adduxi]

You need to setup a BQM to see what your circuit is doing during those hours.  I also noticed some PostRS errors showing.  Keep an eye on those as they should be zero, and rising numbers are usually a sign of noise ingress in the circuit.

The BQM setup is here www.thinkbroadband.com/ping

[pjayuk]

.

[pjayuk]

Like this?

https://www.thinkbroadband.com/broadband/monitoring/quality/share/068f081b41862c1d1cfd9cca233d23e93e... 

[John_GS]

Hi @pjayuk

Thanks for posting. My apologies for the broadband issue. 

I'll send you a PM as there's further tests we need to run.

Best,

[pjayuk]

Upstream has just dropped to 2 mbps again (9.10 pm)

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	39399799	45.8	5120	16 qam	4
2	46200000	45.8	5120	32 qam	3
3	25799956	44.3	5120	16 qam	6
4	32599982	45	5120	16 qam	5

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[pjayuk]

10.35 am and upstream gone again almost completely (1 mbps). 

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	39399664	45.5	5120	16 qam	4
2	46200000	45.7	5120	16 qam	3
3	25800000	44.3	5120	16 qam	6
4	32599922	45	5120	16 qam	5

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[John_GS]

Hi @pjayuk

Thanks for providing me those details. On running those tests, it states there is a provisioning issue. I've therefore sent some signals to the router to see if this resolves it. Please can you unplug your router for me, leave it 5 minutes and then plug it back in? 

Let me know when done that so I can check things my side.

Best,

[pjayuk]

Hi John,

All done. Upstream still slow.

data

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	39399780	45.8	5120	16 qam	4
2	46200000	45.8	5120	16 qam	3
3	25800000	44.3	5120	16 qam	6
4	32599742	45	5120	16 qam	5

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0

[John_GS]

Hi @pjayuk

Thanks for joining m on PM.

Just to update the thread, the engineer visit was booked in.

This can be tracked in your online account

Best,

[pjayuk]

Thanks @John_GS. Hopefully he can fix the problem.